:root {
    --bg-base: #f8fafc;
    --bg-surface: #ffffff;

    --text-main: #0f172a;
    --text-muted: #64748b;

    --border-light: #e2e8f0;
    --border-hover: #cbd5e1;

    --primary: #3b82f6;
    /* Blue completed */
    --primary-hover: #2563eb;

    --accent: #10b981;
    /* Green trend */
    --warning: #f59e0b;
    --danger: #ef4444;
    --neutral: #94a3b8;
    /* Gray planned */

    --font-ui: 'Inter', system-ui, sans-serif;

    --radius-sm: 6px;
    --radius-md: 10px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-base);
    color: var(--text-main);
    font-family: var(--font-ui);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Header */
.top-nav {
    height: 64px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    color: var(--primary);
}

.logo strong {
    color: var(--text-main);
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

/* Dashboard Layout */
.dashboard-layout {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    gap: 2rem;
}

.sidebar {
    width: 320px;
    flex-shrink: 0;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    min-width: 0;
    /* allows shrinking */
}

/* Cards */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 1.25rem;
}

.card-header .card-title {
    margin-bottom: 0;
}

.mt-4 {
    margin-top: 1.5rem;
}

/* Forms */
.form-stack {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-row {
    display: flex;
    gap: 1rem;
}

.input-row>* {
    flex: 1;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
}

.input {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-main);
    transition: all 0.2s;
    background: #fff;
}

.input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.w-full {
    width: 100%;
}

.mt-2 {
    margin-top: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-ui);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-outline {
    background: transparent;
    color: var(--text-main);
    border-color: var(--border-light);
}

.btn-outline:hover {
    background: var(--bg-base);
    border-color: var(--border-hover);
}

.btn-sm {
    padding: 0.4rem 0.6rem;
    font-size: 0.8rem;
}

.btn-danger-text {
    background: transparent;
    color: var(--danger);
    padding: 0.3rem 0.6rem;
}

.btn-danger-text:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.metric-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.metric-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.25rem;
}

.metric-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.text-accent {
    color: var(--primary);
}

.indicator-neutral {
    color: var(--text-main);
}

.indicator-good {
    color: var(--accent);
}

.indicator-warn {
    color: var(--warning);
}

.indicator-danger {
    color: var(--danger);
}

/* Chart Area */
.chart-card {
    min-height: 380px;
    display: flex;
    flex-direction: column;
}

.canvas-container {
    flex: 1;
    position: relative;
    width: 100%;
    min-height: 300px;
}

canvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

.legend {
    display: flex;
    gap: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.swatch {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.bg-planned {
    background: var(--border-hover);
}

.bg-completed {
    background: var(--primary);
}

.bg-trend {
    background: var(--accent);
}

/* Table */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th,
.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-light);
}

.data-table th {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg-base);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table td {
    font-size: 0.95rem;
    color: var(--text-main);
}

.data-table tr:hover td {
    background: var(--bg-base);
}

.empty-state {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    border: 1px dashed var(--border-hover);
    border-radius: var(--radius-sm);
    margin-top: 1rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .dashboard-layout {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }
}

@media print {
    .print-hide {
        display: none !important;
    }

    .dashboard-layout {
        padding: 0;
    }

    .card {
        box-shadow: none;
        border-color: #000;
    }

    body {
        background: #fff;
    }
}